Minor fix to make read_gitfile work .

1 files changed, 16 insertions, 11 deletions

diff --git a/git/repo/fun.py b/git/repo/fun.py
index f5abc27a..0bff677a 100644
--- a/git/repo/fun.py
+++ b/git/repo/fun.py
@@ -13,7 +13,8 @@ from gitdb.util import (
                         )
 from string import digits
 
-__all__ = ('rev_parse', 'is_git_dir', 'touch')
+__all__ = ('rev_parse', 'is_git_dir', 'touch', 'read_gitfile', 'find_git_dir', 'name_to_object', 
+           'short_to_long', 'deref_tag', 'to_commit')
 
 
 def touch(filename):
@@ -46,16 +47,20 @@ def find_git_dir(d):
     return None
 
 def read_gitfile(f):
-	""" This is taken from the git setup.c:read_gitfile function.
-	:return gitdir path or None if gitfile is invalid."""
-	
-	if not isfile(f):
-		return None
-	line = open(f, 'r').readline().rstrip()
-	if line[0:8] != 'gitdir: ':
-		return None
-	path = os.path.realpath(line[8:])
-	return path if is_git_dir(path) else None
+    """ This is taken from the git setup.c:read_gitfile function.
+    :return gitdir path or None if gitfile is invalid."""
+    if f is None:
+        return None
+    try:
+       line = open(f, 'r').readline().rstrip()
+    except (OSError, IOError):
+        # File might not exist or is unreadable - ignore
+        return None
+    # end handle file access
+    if line[0:8] != 'gitdir: ':
+        return None
+    path = os.path.realpath(line[8:])
+    return path if is_git_dir(path) else None
 
 def short_to_long(odb, hexsha):
     """:return: long hexadecimal sha1 from the given less-than-40 byte hexsha